leetcode-problemset/leetcode/originData/duplicate-emails.json

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            "title": "Duplicate Emails",
            "titleSlug": "duplicate-emails",
            "content": "<p>Table: <code>Person</code></p>\n\n<pre>\n+-------------+---------+\n| Column Name | Type    |\n+-------------+---------+\n| id          | int     |\n| email       | varchar |\n+-------------+---------+\nid is the primary key column for this table.\nEach row of this table contains an email. The emails will not contain uppercase letters.\n</pre>\n\n<p>&nbsp;</p>\n\n<p>Write an SQL query to report all the duplicate emails.</p>\n\n<p>Return the result table in <strong>any order</strong>.</p>\n\n<p>The query result format is in the following example.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nPerson table:\n+----+---------+\n| id | email   |\n+----+---------+\n| 1  | a@b.com |\n| 2  | c@d.com |\n| 3  | a@b.com |\n+----+---------+\n<strong>Output:</strong> \n+---------+\n| Email   |\n+---------+\n| a@b.com |\n+---------+\n<strong>Explanation:</strong> a@b.com is repeated two times.\n</pre>\n",
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            "difficulty": "Easy",
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            "exampleTestcases": "{\"headers\": {\"Person\": [\"id\", \"email\"]}, \"rows\": {\"Person\": [[1, \"a@b.com\"], [2, \"c@d.com\"], [3, \"a@b.com\"]]}}",
            "categoryTitle": "Database",
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                    "name": "Database",
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                {
                    "lang": "MySQL",
                    "langSlug": "mysql",
                    "code": "# Write your MySQL query statement below\n",
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                {
                    "lang": "MS SQL Server",
                    "langSlug": "mssql",
                    "code": "/* Write your T-SQL query statement below */\n",
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                {
                    "lang": "Oracle",
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                    "code": "/* Write your PL/SQL query statement below */\n",
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            "sampleTestCase": "{\"headers\": {\"Person\": [\"id\", \"email\"]}, \"rows\": {\"Person\": [[1, \"a@b.com\"], [2, \"c@d.com\"], [3, \"a@b.com\"]]}}",
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            "mysqlSchemas": [
                "Create table If Not Exists Person (id int, email varchar(255))",
                "Truncate table Person",
                "insert into Person (id, email) values ('1', 'a@b.com')",
                "insert into Person (id, email) values ('2', 'c@d.com')",
                "insert into Person (id, email) values ('3', 'a@b.com')"
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